Brazil to Continue COVID Vaccine Trial After Volunteer Dies
Johnson & Johnson Halts COVID-19 Vaccine Trial Due to 'Unexplained Illness'
AstraZeneca COVID-19 Vaccine Study on Hold Over Safety Concerns
Moderna Backtracks COVID-19 Vaccine Trials to Enroll Minorities
Only 18% of Moderna COVID Vaccine Trial Participants are Latino, Black, Indigenous People
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